Spike: Screen Flickers

[DellaRaccoon]

There is currently a noticable flicker on the screen with my breadboarded prototype. Possible causes include:

• Draw loop should really be happening asynchronously. Not likely to be the the cause, since the flicker happens even when there's nothing else going on in the main loop. Also not really something i can change until circuitpython adds async support.
• Not enough voltage on the higher voltage pins.
• Several VFD resources online mention using alternating current, but it's not clear if they're recommending it for the lower voltage pins or the higher voltage pins.
• Some important electronics components are missing from my circuit because i don't really know what i'm doing.

AC

• Cause of flickers is investigated and resolved if possible.

[DellaRaccoon]

It doesn't appear to be a simple issue of not enough voltage. I cranked up the voltage across the grid pins and the display got brighter, but the flicker didn't really go away. I also managed to fry a feather while testing this. Pro tip: turn the power supply off while moving around wires on the breadboard.

[DellaRaccoon]

Maybe i could try for-ing thru the segments instead of the digits. That might not get rid of the flicker, but it would distribute it horizontally instead of vertically, so it may make it less noticable.